ISO/IEC 27002: Information Security Controls

Organizations must implement multi-factor authentication for all privileged access, enforce principle of least privilege through role-based access controls (RBAC), and maintain detailed access logs with regular review cycles.

Data centers must specifically implement segregated administrative networks, enforce password complexity requirements (minimum 12 characters, complexity rules), conduct quarterly access reviews removing obsolete accounts, and maintain privileged access workstations (PAWs) physically isolated from standard networks for administrative functions.

Data centers must establish perimeter security with monitored access points, implement biometric/badge-based entry controls with segregated zones based on asset criticality, and maintain environmental monitoring for temperature, humidity, and fire detection systems.

Specific requirements include securing server cabinets in locked cages, implementing visitor access logs with escort requirements, deploying closed-circuit video surveillance with minimum 90-day retention, and establishing secure disposal procedures for decommissioned hardware through certified data destruction vendors.

Organizations must encrypt sensitive data both in transit (TLS 1.2 minimum) and at rest using NIST-approved algorithms (AES-256 for sensitive data), implement key management systems with separation of duties for key generation/storage, and maintain cryptographic lifecycle documentation.

Data centers must enforce encryption at the storage layer, network layer, and application layer; manage encryption keys through hardware security modules (HSMs); implement key rotation policies (annually minimum), and maintain cryptographic material inventories with audit trails.

Organizations must establish documented incident response procedures with defined roles, escalation paths, and communication protocols; maintain a breach detection capability with maximum 24-hour detection windows; and conduct annual incident response drills with documented results.

Data centers specifically must maintain hot backup sites with recovery time objectives (RTOs) of 4 hours maximum, recovery point objectives (RPOs) of 1 hour maximum, test failover capabilities quarterly, and establish incident response teams with on-call rotation schedules and documented contact trees.

Organizations must conduct security assessments of all critical suppliers, establish contractual security requirements, and maintain oversight through regular audits and performance reviews.

Data centers must implement specific controls including ISO 27001 certification requirements for cloud service providers, documented service level agreements (SLAs) with security metrics, quarterly security assessments of hosting providers and connectivity partners, contractual rights for audit and inspection, and escape clause provisions ensuring data portability within 30 days of service termination.

Organizations must conduct mandatory annual security training covering data handling, incident reporting, and threat awareness, with documented completion rates exceeding 95% across workforce.

Data centers must specifically train operational staff on physical security protocols, incident response procedures, and secure change management; implement role-specific training for system administrators covering secure configuration baselines; establish security champions program with quarterly knowledge assessments; and maintain training records with competency validation for 7 years.

Organizations must implement formal change control processes requiring pre-approval from security teams, impact analysis documentation, and rollback procedures before deploying changes to production systems.

Data centers must enforce change windows (typically 4-hour windows during low-traffic periods), maintain configuration baselines using infrastructure-as-code (IaC) tools, document all changes with authorization signatures, implement automated configuration scanning for compliance drift, and conduct monthly configuration reviews comparing deployed state to approved baselines.

Organizations must maintain centralized logging of all security-relevant events with minimum 12-month retention, implement automated alerting for suspicious patterns, and conduct regular log reviews by security personnel.

Data centers must specifically log all administrative access (login/logout, command execution), network traffic anomalies, firewall policy violations, failed authentication attempts, and unauthorized access attempts; maintain logs on separate systems inaccessible to logged-in administrators; implement security information and event management (SIEM) platforms with correlation rules detecting multi-stage attacks; and preserve logs for legal evidence with forensic chain-of-custody procedures.